JP2009118196A - Mobile communication system, user terminal, monitoring apparatus and maintenance method used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mobile communication system capable of surely notifying the personnel necessary for maintenance about quality deterioration in a user terminal. <P>SOLUTION: The mobile communication system includes a monitoring apparatus (7) for collecting at least node management information of nodes (eNodes 4 to 6). User terminals (1) connected to the nodes (eNodes 4 to 6) include interface means for notifying the monitoring apparatus (7) of a report indicating occurrence of quality deterioration at an application software level including at least audio or moving picture streaming in a current user terminal. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a mobile communication system, a user terminal, a monitoring device, and a maintenance method used therefor, and more particularly, to a maintenance method for grasping quality degradation in a user terminal.

  In the mobile communication system related to the present invention, by detecting a failure through the node management information and operation log of each node constituting the mobile communication core network, the quality degradation in the user terminal is indirectly grasped and dealt with. Yes.

  However, in reality, some of the quality degradation in the user terminal such as silence, abnormal noise, garbled user data, block noise, etc. may not always be grasped only from the node management information and operation log of each node. In some cases, these are inevitably dependent on recognition by the subscriber declaration.

  For example, the configuration and load degree on the user terminal side, detection failure due to incomplete settings or bugs at each node, and nodes [hub (HUB) or router with insufficient fault detection function mixed in the system] Etc.] (hereinafter referred to as “silent failure”).

As a method for reporting this type of failure or the like, there is a method for reporting quality degradation information from a gateway configuring the network to an OSS (Operation Support System) (see, for example, Patent Document 1).
JP 2002-271392 A

  In the mobile communication system related to the present invention, a failure is detected through node management information and an operation log of each node, thereby indirectly grasping and dealing with quality degradation in the user terminal.

  However, in reality, some degradation of user terminal quality such as silence, abnormal noise, garbled user data, block noise, etc. cannot be grasped only from the node management information and operation log of each node (“ Silent disability ") may occur, and there is a problem that these must be relied upon for recognition by the subscriber declaration.

  Moreover, even if the degradation occurs, the subscriber declaration is not necessarily made (the report is optional for each subscriber), and in that case, there is a problem that it is left without an opportunity for improvement. .

  Therefore, an object of the present invention is to provide a mobile communication system, a user terminal, a monitoring device, and a maintenance method used for them that can solve the above-described problems and can reliably notify maintenance personnel of quality degradation in the user terminal. It is in.

A mobile communication system according to the present invention is a mobile communication system including a monitoring device that collects at least node management information of a node,
The user terminal connected to the node includes interface means for reporting to the monitoring device a report indicating the occurrence of quality degradation at the application software level including at least audio or video streaming in the current user terminal.

A user terminal according to the present invention is a user terminal connected to the node in a mobile communication system including a monitoring device that collects at least node management information of the node,
Interface means for reporting to the monitoring device a report indicating the occurrence of quality degradation at the application software level including at least audio or video streaming in the terminal itself.

A monitoring device according to the present invention is a monitoring device that collects at least node management information of a node,
When a report indicating the occurrence of quality degradation at the application software level including at least audio or video streaming in the user terminal is reported from the user terminal connected to the node, the report is associated with the node management information. Means for narrowing down and displaying the deteriorated communication route / node in real time are provided.

A maintenance method according to the present invention is a maintenance method used in a mobile communication system including a monitoring device that collects at least node management information of a node,
A user terminal connected to the node performs processing for reporting to the monitoring device a report indicating the occurrence of quality degradation at the application software level including at least audio or video streaming in the user terminal.

  By adopting the above-described configuration and operation, the present invention provides an effect that it is possible to reliably notify maintenance personnel of quality degradation in the user terminal.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a mobile communication system according to an embodiment of the present invention. Referring to FIG. 1, a mobile communication system according to an embodiment of the present invention includes two evolved packet cores 100 and an evolved RAN (Radio Access Network) 200 of the next generation mobile communication system, each having two MMEs (Mobility Management Entity) / UPE (User). Plane Entity) 2, 3, three eNodeBs 4 to 6, and a plurality of user terminals 1. In FIG. 1, two MME / UPEs and three eNodeBs are used. However, there may be three or more MME / UPEs and two or four eNodeBs, but the present invention is not limited to this.

  The MME / UPEs 2 and 3 and the eNodeBs 4 to 6 are connected by an S1 interface 111, and the eNodeBs 4 to 6 are connected by a mesh (matrix) through an X2 interface 112.

  The mobile communication system according to the embodiment of the present invention includes a monitoring device 7 and a network monitoring device 8. The monitoring device 7 collects and displays at least the node management information of each of the eNodeBs 4 to 6 via the monitoring interface 113 for these devices. The network monitor device 8 is connected between each eNodeB 4 to 6 via the network monitor interface 114 using a network TAP (a device that can copy and branch the communication path information as it is without affecting the communication path). Monitor communications. The U-Plane monitor information monitored by the network monitor device 8 is reported to the monitoring device 7 via the report interface 116.

  The network monitor device 8 also supports voice [VoIP (Voice over Internet Protocol)], video streaming [RTP (Real-time Transport Protocol) and RTSP (Real-Time Streaming Protocol) and RSP (Radio Access Bearer) types. ] The application protocol such as TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) can be separately monitored for throughput, packet loss, delay, etc. depending on the port number difference, etc., and the monitoring results are reported to the outside as necessary. It can be any device that can be used, and a commercially available network monitor device can also be used. It can be.

  FIG. 2 is a block diagram illustrating a configuration example of the user terminal 1 of FIG. In FIG. 2, the user terminal 1 includes a processing unit 11 that performs processing inherent to the user terminal including the application software group 12 and user terminal quality information 13, a user terminal quality information read processing unit 15, and a quality report interface unit 16. A means group 14 relating to the present invention is provided.

  FIG. 3 is a flowchart showing the operation of the user terminal quality information read processing unit 15 of FIG. The operation of the user terminal quality information read processing unit 15 will be described with reference to FIGS.

  The user terminal quality information read processing unit 15 periodically reads the contents of the user terminal quality information 13 recorded (121) by each application software group 12 as needed (steps S1 and S2 in FIG. 3). The user terminal quality information read processing unit 15 compares the content of the read user terminal quality information 13 with a predetermined threshold value, and when there is something exceeding this threshold value (step S3 in FIG. 3), the threshold value is exceeded. A quality report is created based on the contents of the user terminal quality information 13 (step S4 in FIG. 3).

  The user terminal quality information read processing unit 15 transmits the created quality report to the quality report interface unit 16 (123) (step S5 in FIG. 3). The quality report interface unit 16 transmits the quality report sent from the user terminal quality information read processing unit 15 to the mobile communication core network (124).

  FIG. 4 is a block diagram illustrating a configuration example of the eNodeB 4 in FIG. In FIG. 4, the Node B 4 includes a group of means 43 related to the present invention, such as a node management information read processing unit 44 and a monitoring interface unit 45 for the processing unit 41 and the node management information 42 that perform original processing of the node. In addition, eNodeB5 and 6 shown in FIG. 1 have the same configuration as this eNodeB4.

  The processing unit 41 appropriately updates the management information 42 every time an event such as RAB establishment or release (131). The node management information reading unit 44 reads the management information 42 periodically or whenever it is requested from the monitoring device 7 via the monitoring interface unit 45 (132) and transmits it to the monitoring interface unit 45 (133). The monitoring interface unit 45 transmits the information sent from the node management information reading unit 44 to the monitoring device 7 (134).

  FIG. 5 is a block diagram showing a configuration example of the monitoring device 7 of FIG. 4, the monitoring device 7 includes a display screen 71 having a GUI (Graphical User Interface) screen display unit 72 and a GUI screen operation instruction processing unit 73, a monitoring interface unit 74, a node management information processing unit 75, and a node management. An information DB (database) 76, a network monitor interface unit 77, a network monitor information processing unit 78, and a network monitor information DB 79 are provided.

  The GUI screen display unit 72 displays the actual state of the node group belonging to the Evolved Packet Core 100 or the Evolved RAN 200 in a node configuration diagram or the like. The GUI screen operation instruction processing unit 73 is requested by a display content operation instruction from a maintenance person by selecting a specific display element of the GUI screen display unit 72 with a mouse or designating with a GUI button (not shown) or the like. A GUI is provided that receives the received instruction and additionally displays the corresponding information.

  The monitoring interface unit 74 is a part that performs an interface with the monitoring interface unit 45 of FIG. 3, and makes a request for acquiring node management information and receives node management information with the monitoring interface unit 45 (141). The node management information thus transmitted is transmitted to the node management information processing unit 75 (142).

  The node management information processing unit 75 edits the node management information as needed and provides it to the GUI screen display unit 72 (413), displays the information on the screen, and provides statistical data (knowledge) for provisioning later. Is also stored in the node management information DB 76 (415).

  Further, when the node management information processing unit 75 receives a detailed node management information acquisition & display request designated by the maintenance staff with the mouse or GUI button to the GUI screen operation instruction processing unit 73 (144), the monitoring interface An acquisition request is issued to the corresponding node via the unit 74, the result is received / reedited, and provided to the GUI screen display unit 72 as needed to update / add the screen display.

  Each of the network monitor interface unit 77, the network monitor information processing unit 78, and the network monitor information DB 79 is a processing unit that operates when the network monitor device 8 is prepared.

  The network monitor interface unit 77 is a part that performs an interface with the network monitor device 8, and receives an acquisition request for network monitor information and receives network monitor information with the network monitor device 8 (146). The monitor information is transmitted to the network monitor information processing unit 78 (147).

  The network monitor information processing unit 78 edits the network monitor information as needed and provides it to the GUI screen display unit 72 (148), displays the information on the screen, and provides statistical data (knowledge) for later provisioning correspondence. Is also stored in the network monitor information DB 79 (150).

  Further, when the network monitor information processing unit 78 receives a detailed network monitor information acquisition & display request designated by the maintenance personnel from the GUI screen operation instruction processing unit 73 using the mouse or the GUI button (149), the network monitor An acquisition request is issued to the network monitor device 8 via the interface unit 77, the result is received / reedited, and is provided to the GUI screen display unit 72 as needed to update / add the screen display.

  FIG. 6 is a diagram showing an example of associating the user terminal quality report with the node management information in the embodiment of the present invention. FIG. 6 shows an example of a data structure in the case of managing as one element of UE-Context (User Equipment-Context) / PDP-Context (Packet Date Protocol-Context) managed by UPE.

  The UE-Context 301 prepared for each user terminal 1 includes index information for each PDP-Context group that manages RAB related information together with an IP (Internet Protocol) address, ID (IDentifier), and the like that identify the user terminal 1. have.

  A PDP-Context 302 that is indexed from the Index information includes information 303 and 304 that specify a RAB identifier and a connection destination eNodeB, a traffic class that indicates priority, a TFT (Traffic Flow Template) 305 that includes information that specifies a server, and the like. Are added to the user terminal quality report list in the service that is the management category of the PDP-Context.

  In addition, in FIG. 8 described later, an example (illustrated by a dotted line) in which the communication route / node of the user terminal 1 that issued the user terminal quality report is specified is shown, but this has the UE-Context / PDP-Context. 6 and UE-Context / PDP-Context information in FIG. 6 [UE-Context user terminal IP address (UPE issue), user terminal ID (UPE issue) / PDP-Context connection destination eNodeB IP address, eNodeB port No (UPE payout), server IP address, server Port No] can be specified.

  FIG. 7 is a diagram showing an example of a data structure when managing the user terminal quality report in the embodiment of the present invention. In FIG. 7, a user terminal quality report list 402 can be indexed by an index 401 from the PDP-Context, and has index information for a plurality of user terminal quality reports.

  Each of the user terminal quality reports 403, 404,... Can be uniquely specified by the time of occurrence, together with basic information about the application program on the user terminal 1 that issued the user terminal quality report, the deterioration quality item name, It includes information such as a quality information group (bit rate, bandwidth, number of lost packets, etc.) that supports it.

  Further, in the case of the user terminal 1 having a function of measuring a standard quality index of VoIP or video streaming, an R value (ITU-T G.107), a PESQ (Perceptual Evaluation of Speech Quality) (ITU-T P.862). ), MDI (Media Delivery Index) (RFC 4445) and the like are also managed simultaneously.

  Since the user terminal quality report list 402 is limited, cyclic management is performed, and when the number of user terminal quality reports reaches the upper limit, old data is overwritten. In this embodiment, the monitoring level and load of the mobile communication core network can be adjusted by appropriately selecting a threshold value for judging quality degradation, a monitoring target user terminal, a monitoring target RAB, a quality information element to be reported, and the like. It shall be

  FIG. 8 is a diagram showing a display example of the display screen 71 of the monitoring device 7 of FIG. FIG. 8 shows an example in which the user terminal 1 in which quality degradation has occurred is displayed with an arrow, and the specific communication route / node related to the service (RAB) in which quality degradation has occurred is displayed as a dotted line or the like. ing.

  For example, if the user terminal 1 in which quality degradation has occurred is clicked with a mouse on the GUI, the user terminal quality report is displayed in detail (screen 501), and if the path between the eNodeB and the MME / UPE is clicked. If the details of management information and network monitor information in the UPE are displayed (screen 502) and a node in the Evolved Packet Core 100 or the Evolved RAN 200 is clicked, the time before and after the quality degradation of the user terminal 1 occurs for that node A band log can be displayed (screen 503).

  FIG. 9 is a sequence chart showing an operation example of the mobile communication system according to the embodiment of the present invention. The operation of the mobile communication system according to the embodiment of the present invention will be described with reference to FIG.

  FIG. 9 shows the node configuration diagram on the display screen of the monitoring device when the user terminal quality report is generated, by displaying the communication routes / nodes related to the user terminal quality report, and then the maintenance staff confirms the detailed information. Therefore, an example of acquiring and displaying detailed information as a result of an acquisition request specifying a user terminal, a communication path, and a node on the display screen (using a mouse or the like on the GUI) is shown. In addition, there is a method of collecting and displaying all detailed information at once when a user terminal quality report is generated).

  First, when a user terminal in which quality degradation has occurred transmits a user terminal quality report to the eNodeB with which the user terminal is communicating (601 in FIG. 9), the eNodeB forwards the user terminal quality report to the MME. (For example, “Direct Transfer” is used) (602 in FIG. 9).

  The MME requests that the user terminal quality report be associated with the management information (PDP-Context) in the UPE (603 in FIG. 9). When the UPE performs the association with the management information (604 in FIG. 9), the UPE returns a request response to the MME [for example, using the Modify / Reply of MEGACOP (Media Gateway Control Protocol) (605 in FIG. 9).

  As a result, the MME transmits a quality degradation notification together with the node management information associated with the user terminal quality report to the monitoring device (606 in FIG. 9), and the monitoring device transmits the node management information for later provisioning correspondence. In order to accumulate as statistical data (knowledge), it is stored in the node management information DB (607 in FIG. 9), the information is edited (608 in FIG. 9), and the result is displayed in the node configuration diagram on the display screen. Reflect / display (609 in FIG. 9).

  The maintenance staff confirms the communication routes / nodes displayed by distinguishing them according to differences in line types, colors, etc. on the display screen, and understands the fact and outline of the occurrence of quality degradation (610 in FIG. 9).

  After that, if the maintenance staff needs more detailed information (network monitor information and operation logs of each node) (611 in FIG. 9), the monitoring device requests the detailed information from the network monitoring device (FIG. 9). 9 612), the detailed information is received (613 in FIG. 9).

  The monitoring device requests the detailed information from the UPE (614 in FIG. 9), receives the detailed information (615 in FIG. 9), and requests the detailed information from the eNodeB (616 in FIG. 9). The detailed information is received (617 in FIG. 9).

  The monitoring device stores the detailed information received from each of these network monitoring devices, UPE, and eNodeB (618 in FIG. 9), edits the information (619 in FIG. 9), and displays it on the display screen ( 620) in FIG. 9 and the maintenance personnel confirm the detailed information (621 in FIG. 9).

  Thus, in this Embodiment, the quality deterioration in a user terminal can be reliably notified to a maintenance staff. That is, according to the present embodiment, it is possible to realize the cause route / node specification and the improvement of the TAT of the countermeasure by the maintenance staff when the deterioration of the user terminal quality occurs (improvement of “narrow sense monitoring”).

  In addition, in this embodiment, it is possible to reduce the man-hours for provisioning in the medium to long term, such as node expansion, distribution, line speed increase, etc. and CS improvement directly connected to the subscriber (improvement of “broad monitoring”) ).

  As a result, in this embodiment, 3EXP-LTE (3rd Generation Partnership Project-Long Term Evolution) mobile communication core network OPEX (Operational Expenditure) can be reliably reduced.

  As described above, according to the present invention, in a 3GPP-LTE mobile communication core network composed of multi-vendor nodes connected in a mesh (matrix), a user terminal is at the application software (protocol) level such as video streaming. Is provided with an interface that reports to the mobile communication core network at any time a report indicating that the current user terminal quality (service provision quality) of the mobile terminal has deteriorated.

  In addition, the present invention associates the report with the node management information such as UE-Context / PDP-Context on the mobile communication core network side, narrows down the deteriorated communication route / node to the monitoring device, displays a real-time display, and a plurality of reports. Automatic accumulation / appropriate display while linking with node management information and operation log (alarm) etc. as statistical data (knowledge) for later provisioning correspondence, silent anyway regardless of subscriber declaration (claim) Means capable of efficiently searching for fault identification and handling are provided. As a result, the present invention can realize the improvement of TAT (Turn Around Time) for identifying the cause route / node and the countermeasure by the maintenance staff when the degradation of the user terminal quality occurs (improvement of “narrow sense”) ).

  Furthermore, the present invention can realize medium- to long-term provisioning man-hour reduction such as node expansion and distribution, line speed increase, and CS improvement directly connected to the subscriber (improvement of “broad monitoring”), OPEX can be reliably reduced.

  In this case, according to the present invention, in a 3GPP-LTE mobile communication core network composed of multi-vendor nodes connected in mesh (matrix), the user terminal connected to each node is an application software in the current user terminal. Interface means for reporting a report indicating the occurrence of quality degradation at a level to the mobile communication core network as needed.

  Further, the present invention relates to means for narrowing down and displaying the deteriorated communication route / node on the monitoring device in real time by associating the report with node management information such as UE-Context / PDP-Context on the mobile communication core network side. It has.

  Furthermore, the present invention includes means for automatically storing / appropriately displaying each of a plurality of reports as statistical data for later provisioning correspondence while linking with at least node management information on the mobile communication core network side. In this case, each report may be linked to the operation log together with the node management information.

  In the present invention, in a general user terminal, each application program has quality information by default, and the R value (ITU-T G.107), PESQ (ITU-TP.862), and MDI ( If a standard quality index measurement function such as RFC4445) is provided, the stance using that function is described. However, such information and functions are not necessarily widely expected for general user terminals.

  Therefore, in the present invention, for example, an arbitrary number of user terminals that have cleared the implementation of the information and function may be used in an arbitrary area and used as a dedicated probe for sampling.

  In the present invention, specific communication routes / nodes related to a user terminal in which quality degradation has occurred and a service (RAB) in which quality degradation has occurred are displayed as shown in FIG. However, these displays may be displayed after the previous quality deterioration information is erased every time new quality deterioration occurs, or the new display is displayed in duplicate while the previous display remains for a certain period. It can also make it easier to understand the trend of the situation.

  Further, the present invention assumes that the monitoring device has a function of continuously reflecting the actual node configuration in the node configuration diagram in real time. However, in the present invention, when the Evolved Packet Core and Evolved RAN to be monitored are large, the number of user terminals becomes enormous. Therefore, in the present invention, it is also possible to take a method in which only the user terminal is displayed when the quality report is transmitted when the user terminal is displayed on the display screen.

  Furthermore, in the present invention, a dedicated protocol may be defined for each of the quality report interface unit and the monitoring interface unit. However, in the present invention, a standard management protocol such as SNMP (Simple Network Management Protocol) may be adopted, and autonomous reports and request-response type information collection may be performed by mapping to Trap and Get Request, respectively.

  Furthermore, in the present invention, the monitoring interface unit shown in FIGS. 3 and 4 can be omitted by mounting the node management information on the node management information DB of the monitoring device by NFS (Network File System) and sharing the network. Is possible.

  The present invention can be most effectively used in a 3GPP-LTE mobile communication core network composed of multi-vendor nodes connected in mesh. In addition to 3GPP-LTE, the present invention can be widely applied to a mobile communication core network having a mesh (matrix) connection or a portion composed of multi-vendor node groups.

It is a block diagram which shows the structural example of the mobile communication system by embodiment of this invention. It is a block diagram which shows the structural example of the user terminal of FIG. It is a flowchart which shows operation | movement of the user terminal quality information reading process part of FIG. It is a block diagram which shows the structural example of eNodeB of FIG. It is a block diagram which shows the structural example of the monitoring apparatus of FIG. It is a figure which shows the example which links | relates the user terminal quality report in embodiment of this invention with node management information. It is a figure which shows an example of the data structure at the time of managing the user terminal quality report in embodiment of this invention. It is a figure which shows the example of a display of the display screen of the monitoring apparatus of FIG. 5 is a sequence chart showing an operation example of the mobile communication system according to the embodiment of the present invention.

Explanation of symbols

1 User terminal 2,3 MME / UPE
4-6 eNodeB
DESCRIPTION OF SYMBOLS 7 Monitoring apparatus 8 Network monitoring apparatus 11 User terminal original process 12 Application software group 13 User terminal quality information 14 Means group relevant to this invention 15 User terminal quality information read-out processing part 16 Quality report interface part 41 Node original process 42 Node management Information 43 Group of means related to the present invention 44 Node management information read processing unit 45 Monitoring interface unit 71 Display screen 72 GUI screen display unit 73 GUI screen operation instruction processing unit 74 Monitoring interface unit 75 Node management information processing unit 76 Node management information DB
77 Network Monitor Interface Unit 78 Network Monitor Information Processing Unit 79 Network Monitor Information DB
100 Evolved Packet Core
200 Evolved RAN

Claims (25)

A mobile communication system including a monitoring device that collects at least node management information of a node,
The user terminal connected to the node has interface means for reporting to the monitoring device a report indicating occurrence of quality degradation at the application software level including at least audio or video streaming in the current user terminal. Mobile communication system.   The mobile communication system according to claim 1, wherein the interface means reports the report to the monitoring device via a mobile communication core network.   The mobile communication system according to claim 1 or 2, wherein the node is connected in a matrix with other nodes.   The mobile communication system according to claim 2, wherein the mobile communication core network is a 3GPP-LTE (3rd Generation Partnership Project-Long Term Evolution) mobile communication core network.   4. The monitoring apparatus according to claim 1, further comprising means for narrowing down and displaying the deteriorated communication route / node in real time by associating the report with the node management information. Mobile communication system.   6. The monitoring apparatus according to claim 1, further comprising means for automatically accumulating the report as statistical data and linking it with at least the node management information and displaying it appropriately. Or a mobile communication system.   The node management information includes at least UE-Context (User Equipment-Context) / PDP-Context (Packet Date Protocol-Context), wherein the node management information includes at least one of UE-Context (User Equipment-Context) and PDP-Context (Packet Date Protocol-Context). Any one of the mobile communication systems. A user terminal connected to the node in a mobile communication system including a monitoring device that collects at least node management information of the node,
A user terminal comprising interface means for reporting to the monitoring device a report indicating occurrence of quality degradation at an application software level including at least audio or video streaming in the terminal itself.   9. The user terminal according to claim 8, wherein the interface means reports the report to the monitoring device via a mobile communication core network.   The user terminal according to claim 8 or 9, wherein the node is connected to other nodes in a matrix.   The user terminal according to any one of claims 8 to 10, wherein the node management information includes at least UE-Context (User Equipment-Context) / PDP-Context (Packet Date Protocol-Context).   The user terminal according to claim 9, wherein the mobile communication core network is a 3GPP-LTE (3rd Generation Partnership Project-Long Term Evolution) mobile communication core network. A monitoring device that collects at least node management information of a node,
When a report indicating the occurrence of quality degradation at the application software level including at least audio or video streaming in the user terminal is reported from the user terminal connected to the node, the report is associated with the node management information. A monitoring apparatus comprising means for narrowing down and displaying the deteriorated communication route / node in real time.   The monitoring apparatus according to claim 13, wherein the report is reported from the user terminal via a mobile communication core network.   15. The monitoring device according to claim 13, wherein the node is connected in a matrix with other nodes.   The monitoring apparatus according to claim 14, wherein the mobile communication core network is a 3GPP-LTE (3rd Generation Partnership Project-Long Term Evolution) mobile communication core network.   16. The monitoring apparatus according to claim 13, further comprising means for automatically storing the report as statistical data while linking it with at least the node management information and displaying it appropriately.   The node management information includes at least UE-Context (User Equipment-Context) / PDP-Context (Packet Date Protocol-Context). Monitoring device. A maintenance method used in a mobile communication system including a monitoring device that collects at least node management information of a node,
Maintenance in which a user terminal connected to the node performs processing for reporting to the monitoring device a report indicating the occurrence of quality degradation at the application software level including at least audio or video streaming in the user terminal Method.   20. The maintenance method according to claim 19, wherein in the process of reporting to the monitoring device, the report is reported to the monitoring device via a mobile communication core network.   21. The maintenance method according to claim 19, wherein the node is connected to other nodes in a matrix.   The maintenance method according to any one of claims 19 to 21, wherein the mobile communication core network is a 3GPP-LTE (3rd Generation Partnership Project-Long Term Evolution) mobile communication core network.   The said monitoring apparatus performs the process which narrows down the communication route / node of the said deterioration, and displays in real time by correlating the said report with the said node management information. Maintenance method.   24. The process according to claim 19, wherein the monitoring device automatically accumulates the report as statistical data while linking with at least the node management information, and appropriately displays the report. Any maintenance method described.   The node management information includes at least UE-Context (User Equipment-Context) / PDP-Context (Packet Date Protocol-Context), wherein the node management information includes at least one of UE-Context (User Equipment-Context) and PDP-Context (Packet Date Protocol-Context). Any maintenance method described.

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